Tigard

Tigard is an open-source, FT2232H-based, multi-protocol, multi-voltage tool for hardware hacking. It brings together the connections you reach for constantly when attaching to a reverse-engineered target — commonly used pin-outs, a labelled wiring harness, onboard level-shifting, and a logic-analyzer connection — into one tidy board.

Good for:

• Talking to low-speed interfaces like UART, JTAG, SWD, SPI, and I2C.
• Working across different target voltages without extra level shifters.
• Tapping signals for a logic analyzer while you probe an unknown device.

Notes: Its labelled harness and onboard level-shifting make it especially friendly for early interface hunting, where you are still figuring out which pins are which and what voltage the target runs at.